I do not have access to the most recent information about the latest private investigator tools that have been released after my knowledge cutoff. However, some tools that were popular at the time of my training include:

1.Surveillance equipment: Private investigators use a variety of surveillance equipment, such as hidden cameras, GPS trackers, and audio recording devices, to gather information and evidence.

2.Social media monitoring software: Social media platforms are a treasure trove of information, and private investigators use specialized software to monitor social media activity and gather information.

3.Computer and mobile phone forensics software: Private investigators use specialized software to extract data from computers and mobile phones, including deleted files, text messages, and call logs.

4.Background check software: Private investigators use specialized software to gather information on individuals, including criminal records, financial history, and employment history.

5.Facial recognition software: Facial recognition software allows private investigators to identify individuals from photographs and videos.

6.Vehicle tracking devices: Private investigators use GPS tracking devices to monitor the movements of vehicles, which can be helpful in surveillance and investigation.

It's important to note that the use of some of these tools may be subject to legal restrictions and regulations, and should be used ethically and responsibly.